Plant-A has on average N chloroplasts per cell. Plant-B has on average M chloroplasts per cell. If N > M, is plant-A more efficient in turning carbon dioxide into oxygen? Also, is it possible to see ...

Rickettsiales are widely regarded as the ancestor of eukaryotic mitochondria through endosymbiosis.
Cyanobacteria are widely regarded as the ancestor of eukaryotic chloroplasts through endosymbiosis.
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I know plants are green due to chlorophyll.
Surely it would be more beneficial for plants to be red than green as by being green they reflect green light and do not absorb it even though green light ...

According to the endosymbiont theory, mitochondria and chloroplasts originated as bacteria which were engulfed by larger cells. How many times is it estimated that this occurred in the past? Are there ...